reference image for jump rings

as I try to shop around for jump rings, numbers don't really mean anything without a frame of reference. So! Went out looking and found this, hoping it helps. Many of the jump rings I'm looking at will possibly be smaller than 3mm, but this is a pretty solid chart all the same.


also another helpful source:
http://www.facetjewelry.com/metal-wire/resources/2016/05/jump-ring-sizes-and-gauges